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Table 5 T test and one-way ANOVA p values comparing different pyrolysis temperatures for biochar samples

From: The effect of pyrolysis temperature and feedstock on date palm waste derived biochar to remove single and multi-metals in aqueous solutions

Ion

T test

One-way ANOVA

Leaf 400 and 500

Leaf 500 and 600

Leaf 400 and 600

Frond 400 and 500

Frond 500 and 600

Frond 400 and 600

Leaf 400, 500 and 600

Frond 400, 500 and 600

Single metal ion

Copper

0.4

0.31

0.16

0.27

0.17

0.31

0.94

0.16

Iron

0.52

0.38

0.25

0.32

0.16

0.31

0.89

0.98

Nickel

0.0019

0.07

0.74

0.22

0.97

0.44

0.13

0.001

Zinc

0.68

0.67

0.38

0.86

0.59

0.60

0.22

0.73

Mixed metal ions

Copper

0.79

0.68

0.37

0.38

0.47

0.22

0.91

0.84

Iron

0.37

0.11

0.52

0.35

0.35

0.034

0.69

0.55

Nickel

0.41

0.97

0.42

0.58

0.97

0.40

0.85

0.79

Zinc

0.36

0.95

0.38

0.53

0.91

0.36

0.53

0.73